The correct answer is to set the 'Minimum TLS version' property of the logical server to 1.2. This server-level configuration enforces TLS 1.2 or higher for Azure SQL Database connections by rejecting any client attempting to use TLS 1.0 or 1.1, regardless of the client's own settings. It works because Azure SQL Database evaluates this property at the transport layer before any authentication occurs, making it a definitive security gate that overrides all client-side TLS negotiation. On the DP-300 exam, this scenario tests your understanding of server-level versus client-level controls, often appearing as a trap where you might be tempted to modify individual connection strings or firewall rules. The key distinction is that the minimum TLS version is a property of the logical server itself, not the database, and it applies globally to all databases on that server. Memory tip: think of it as a "bouncer at the server door" — set the minimum version once, and it blocks any outdated TLS handshake before it even reaches your database.
DP-300 Implement a secure environment Practice Question
This DP-300 practice question tests your understanding of implement a secure environment. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Your company uses Azure SQL Database. You need to ensure that all connections to the database use TLS 1.2 or higher. Currently, some client applications are connecting using TLS 1.0. What should you do?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Set the 'Minimum TLS version' property of the logical server to 1.2.
Option B is correct because setting the 'Minimum TLS version' property of the Azure SQL logical server to 1.2 enforces that all incoming connections must use TLS 1.2 or higher. This server-level setting overrides any client-side configuration, blocking connections that attempt to use TLS 1.0 or 1.1. It is the simplest and most effective way to enforce the minimum TLS version across all client applications without requiring changes to each client.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Configure the server firewall to block non-TLS traffic.
Why it's wrong here
Incorrect: Firewall rules do not enforce TLS version.
✓
Set the 'Minimum TLS version' property of the logical server to 1.2.
Why this is correct
Correct: This enforces TLS 1.2 for all connections.
Related concept
Read the scenario before looking for a memorised answer.
✗
Set the 'tls_version' database parameter to 1.2 in the master database.
Why it's wrong here
Incorrect: TLS version is set at the server level, not via database parameters.
✗
Update the client applications to only use TLS 1.2.
Why it's wrong here
Incorrect: This is a client-side fix, not server-side enforcement.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may think updating client applications (Option D) is sufficient, but the exam tests the understanding that server-side enforcement is required to guarantee compliance across all clients, especially when you cannot control or update every client application.
Detailed technical explanation
How to think about this question
The 'Minimum TLS version' property is set via the Azure portal, PowerShell, or Azure CLI on the logical server resource, and it directly controls the TLS handshake negotiation at the gateway layer. When set to 1.2, the server rejects any connection attempt that offers a TLS version lower than 1.2 during the handshake, even if the client supports higher versions. This is critical in multi-tenant or regulated environments where legacy clients might inadvertently downgrade the connection, and it aligns with industry standards like PCI DSS and NIST SP 800-52.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A healthcare organisation deploys an application with a public-facing web tier and a private database tier. The database subnet has no public IP and only accepts connections from the web tier's security group. Questions like this test whether you can design cloud network isolation using VNets/VPCs, subnets, and security group rules.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this DP-300 question in full detail.
Implement a secure environment — This question tests Implement a secure environment — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Set the 'Minimum TLS version' property of the logical server to 1.2. — Option B is correct because setting the 'Minimum TLS version' property of the Azure SQL logical server to 1.2 enforces that all incoming connections must use TLS 1.2 or higher. This server-level setting overrides any client-side configuration, blocking connections that attempt to use TLS 1.0 or 1.1. It is the simplest and most effective way to enforce the minimum TLS version across all client applications without requiring changes to each client.
What should I do if I get this DP-300 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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